用于抗菌活性的氮等离子体处理的C/PS纳米复合薄膜的表面分析
Surface analysis of nitrogen plasma-treated C/PS nanocomposite films for antibacterial activity.
作者信息
El-Sayed Naglaa M, Reda Fifi M, Farag Omar F, Nasrallah Doaa A
机构信息
Physics Department Faculty of Science, Zagazig University, Zagazig, Egypt.
Botany and Microbiology Department, Faculty of Science, Zagazig University, Zagazig, Egypt.
出版信息
J Biol Phys. 2017 Jun;43(2):211-224. doi: 10.1007/s10867-017-9447-6. Epub 2017 May 4.
The influence of N plasma on the antibacterial properties of polystyrene/fullerene (C/PS) nanocomposite films with two concentrations is investigated. A comparison is made between the surface characteristics of the films before and after plasma irradiation for different time intervals. The alterations induced on the surface of the films after treatment are analyzed by contact angle and surface energy measurements, FTIR spectroscopy, and atomic force microscopy. The antibacterial properties, growth, biofilm formation, and adhesion of the nanocomposite films against two multidrug-resistant bacterial strains, Staphylococcus aureus KT337489 and Pseudomonas aeruginosa KT337488, are investigated before and after plasma irradiation. The results indicate that P. aeruginosa is more sensitive to treatment than S. aureus as well as an enhancement of the anti-adhesion of both strains to treated surfaces through exposure.
研究了氮等离子体对两种浓度的聚苯乙烯/富勒烯（C/PS）纳米复合薄膜抗菌性能的影响。对不同时间间隔的等离子体辐照前后薄膜的表面特性进行了比较。通过接触角和表面能测量、傅里叶变换红外光谱（FTIR）以及原子力显微镜分析了处理后薄膜表面的变化。研究了等离子体辐照前后纳米复合薄膜对两种耐多药细菌菌株金黄色葡萄球菌KT337489和铜绿假单胞菌KT337488的抗菌性能、生长、生物膜形成及粘附情况。结果表明，铜绿假单胞菌比金黄色葡萄球菌对处理更敏感，并且通过辐照增强了两种菌株对处理表面的抗粘附能力。
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